Abstract : The report surveys the work undertaken in the field in Barbados from July 1, 1968 to December 31, 1969, and the resulting analyses. The conclusion is reached that energy budget and microclimatic conditions over Barbados represent the interelationships between the prevailing wind field, the pattern of cloud and precipitation and topographic variations in net radiation. These express themselves by variations in surface moisture conditions, and water balance characteristics, rather than in large differences in temperature, or humidity. A key to understanding these features is though to lie in a better appreciative of the role of the steep east cost are of Barbados where moning heating results in mixed surface radiative temperature within three hours of sunrise during which time a maximum topographic variation in the radiation balances over the island results. (Author)